Hi,
I want to detect when a particular field of a TIB_Query is updated
& posted. My TIB_DataSource's OnDataChange occurs too early (before
posting) and its OnUpdateData event always seems to have "Field" set
to null.

void __fastcall TOrdersForm::OrderSrcUpdateData(TIB_StatementLink
*Sender, TIB_Statement *Statement, TIB_Column *Field)
{
if (Field)
{
// NEVER REACHED DESPITE EDITING THIS FIELD IN A GRID & POSTING IT!
if (Field->FieldName == "ORDER_DATE")
SuplrQry->CalculateFields();
}
}

Why is it so?

V4.2.Ib

Thanks,
Steve